This page contains free "Oval Art Deco Ring 3D print model 20", which is a work by "Unknown author".
Can be downloaded at "Unknown platform" by following the link.
This specific 3D model is provided under the "Unknown license" framework.
STL (Stereolithography, filesize: 22.6 MB), 3DM (Rhinoceros 3D, filesize: 15.6 MB)